I am a chaebol in South Korea - Chapter 85: Man time

This is a story about the protagonist getting the system, going crazy in the biochemical apocalypse, producing aircraft and tanks, destroying zombies, saving good people and killing bad people.

- Description from novelbuddy

In the ancient times when gods and demons ruled the world, countless legacies were left behind.Young Qin Chen acquired the Supreme Devouring Scripture, which allowed him to consume the heritages of gods and demons, comprehend thousands of magical laws, and become a supreme sovereign.The day when my Devouring God clan returns, will be the day that these myriad worlds tremble!

This is a century glittering with the brilliance of human civilization, a world where steam engines, magic, and demi-humans coexist, a chapter of complaints committed due to exploration.'Red Dragon Queen rises first, annihilating all human affairs with her wrathful flames.''The mysterious child of the sea will raise great waves to erase the sins of humanity.''The god of the skies will leave no refuge for the remnants, nowhere to belong.''The immortal witch composes epitaphs for them with her magic.''And I, will write a new chapter for this world'... ...... ...Years later, Fisher, who has received the apocalyptic prophecy and the miraculous tool called the Demi-Human Girls' Completion Manual, wishes to be recognized as a pioneer in demi-human academia, a savior of human civilization, a dove of peace, and a messiah.Instead of being the person who is torn apart with the firewood knife, and the savior divided into pieces.

This is a story about love, friendship, ambition, betrayal and fearsome weapons.